wisptis.exe

What does it do?

This executable runs as a system service that provides pen-data collection. If you're not using a tablet PC or a tablet with your PC this does not need to be running. The executable's name is an acronym that references an outdated internal name for the team that developed it (Windows Ink Services Platform Tablet Input Subsystem).

Virus Precaution:
The original file from
Microsoft gets placed in the
Located at
C:WINDOWSSystem32wisptis.exe . If you find it anywhere else then you should be suspicious for sure.

You'll want to keep an eye on
this google search for any known viruses.
At this time I have not found ANY viruses that run themselves using this filename. All of the results currently affect this file in some way, but do not actually run as this filename.